Chiayi or Alishan Forest Recreation Area · 2451m

Zhushan Observation Deck

A viewing platform at about 2,451 metres inside Alishan National Forest Recreation Area, reached at night only under the official Zhushan stargazing-line rules.

Promising skies. Check access first.

Forecast availableSky conditions onlyRecommendation paused

Sunset 18:44Astronomical dark 20:09Sunrise 05:21

86Sky conditions only

Excellent↗

Moon for the selected night

Waxing crescent

34% · Below horizon

34%

Excellent

Cloud

20%

Wind 2.4 km/h

Excellent

Rain chance

Visibility 61 km

Poor

Humidity

86% · 11°C

Visibility 61 km

Hourly sky conditions

Sun, Jul 19

Booking not verified

Checks before departure

The published stargazing line departs at 19:00 for a 19:00-21:00 round trip, with reservation and weather-dependent operation. Directions end at the Alishan arrival point and do not authorize private-car access to Zhushan.

Booking not verifiedTransport not verifiedOfficial warning not verified

Opening window: The published night stargazing-line window is 19:00-21:00; same-day operation must still be confirmed.
Reservation: The Zhushan stargazing line requires advance booking and operates as a round trip only.
Transport: A park-arrival route is not private-car authorization for Zhushan; confirm whether the bus is operating on the selected date.
Road and arrival: Zhushan Forest Road has control posts; the lawful arrival point is separate from the viewing coordinates.
Facilities: Viewing platform
Language support: Official live information is primarily in Traditional Chinese.
Time basis: Asia/Taipei
Forecast and viewing coordinates: 23.51199, 120.82263
Directions coordinates: 23.50882, 120.80200
Altitude: 2451 m

Before you stargaze

· Give your eyes about 10 minutes to adapt to the dark after arrival.
· Keep flashlights and vehicle lights low for other stargazers.
· Recheck local temperature, wind, cloud, and official warnings just before departure.
· Verify road, parking, and return-route conditions separately from the sky score.

Sources and checked dates

Taiwan Forest Recreation - Alishan National Forest Recreation Area

Checked: Jul 10, 2026, 11:30 · Review by: Aug 9, 2026, 11:30

Alishan Zhushan Stargazing Line reservation and night operation

Checked: Jul 10, 2026, 11:30 · Review by: Aug 9, 2026, 11:30

Chiayi Forest Branch high-altitude stargazing programme

Checked: Jul 10, 2026, 11:30 · Review by: Jan 6, 2027, 11:30

IANA Time Zone Database

Checked: Jul 10, 2026, 11:30 · Review by: Jan 6, 2027, 11:30

Central Weather Administration Weather warning dataset for Chiayi and Alishan

Checked: Jul 10, 2026, 11:30 · Review by: Jul 11, 2026, 11:30

Central Weather Administration Typhoon warning dataset for Chiayi and Alishan

Checked: Jul 10, 2026, 11:30 · Review by: Jul 11, 2026, 11:30

Central Weather Administration Long-wave observation dataset for Chiayi and Alishan

Checked: Jul 10, 2026, 11:30 · Review by: Jul 11, 2026, 11:30

Central Weather Administration Tsunami information dataset for Chiayi and Alishan

Checked: Jul 10, 2026, 11:30 · Review by: Jul 11, 2026, 11:30

Zhushan Observation Deck

A viewing platform at about 2,451 metres inside Alishan National Forest Recreation Area, reached at night only under the official Zhushan stargazing-line rules.

Promising skies. Check access first.

Forecast availableSky conditions onlyRecommendation paused

Sunset 18:44Astronomical dark 20:09Sunrise 05:21

Checks before departure

Booking not verifiedTransport not verifiedOfficial warning not verified

Opening window

The published night stargazing-line window is 19:00-21:00; same-day operation must still be confirmed.

Reservation

The Zhushan stargazing line requires advance booking and operates as a round trip only.

Transport

A park-arrival route is not private-car authorization for Zhushan; confirm whether the bus is operating on the selected date.

Road and arrival

Zhushan Forest Road has control posts; the lawful arrival point is separate from the viewing coordinates.

Facilities

Viewing platform

Language support

Official live information is primarily in Traditional Chinese.

Time basis

Asia/Taipei

Forecast and viewing coordinates

23.51199, 120.82263

Directions coordinates

23.50882, 120.80200

Altitude

2451 m

Before you stargaze

· Give your eyes about 10 minutes to adapt to the dark after arrival.

· Keep flashlights and vehicle lights low for other stargazers.

· Recheck local temperature, wind, cloud, and official warnings just before departure.

· Verify road, parking, and return-route conditions separately from the sky score.